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Abstract
The results of ionic transport measurements for the lanthanum orthoniobate substituted with 10 and 30 mol% of antimony (LaNb0.9Sb0.1O4 and LaNb0.7Sb0.3O4) are presented and discussed. The influence of calcium co-doping on these properties has also been analysed. It has been shown that for the investigated material protonic conductivity predominates at temperatures up to 800 °C in oxidizing atmospheres under wet conditions. The maximum observed protonic conductivity reaches ∼10−4 S cm−1 at 800 °C (in humidified air); under dry conditions, the increasing influence of oxygen vacancies and holes is detected. Oxygen self-diffusivity has also been analysed by isotopic exchange to investigate the possible diffusion paths.
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Authors (8)
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Cheng Li
- Department of Chemistry Imperial College London
-
Stephen J. Skinner dr
- Department of Chemistry Imperial College London
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Reidar Haugsrud PhD
- Department of Chemistry University of Oslo
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1039/C6TA03403A
- License
- Copyright (2016 The Royal Society of Chemistry)
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
Journal of Materials Chemistry A
no. 4,
pages 1 - 12,
ISSN: 2050-7488 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Wachowski S., Mielewczyk-Gryń A., Zagórski K., Li C., Jasiński P., Skinner S., Haugsrud R., Gazda M.: Influence of Sb-substitution on ionic transport in lanthanum orthoniobates// Journal of Materials Chemistry A. -Vol. 4, (2016), s.1-12
- DOI:
- Digital Object Identifier (open in new tab) 10.1039/c6ta03403a
- Verified by:
- Gdańsk University of Technology
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